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/*
* Interrupt Manager
*
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/score/isr.h>
#include <rtems/rtems/intr.h>
/* rtems_interrupt_catch
*
* This directive allows a thread to specify what action to take when
* catching signals.
*
* Input parameters:
* new_isr_handler - address of interrupt service routine (isr)
* vector - interrupt vector number
* old_isr_handler - address at which to store previous ISR address
*
* Output parameters:
* RTEMS_SUCCESSFUL - always succeeds
* *old_isr_handler - previous ISR address
*/
rtems_status_code rtems_interrupt_catch(
rtems_isr_entry new_isr_handler,
rtems_vector_number vector,
rtems_isr_entry *old_isr_handler
)
{
if ( !_ISR_Is_vector_number_valid( vector ) )
return RTEMS_INVALID_NUMBER;
if ( !_ISR_Is_valid_user_handler( (void *) new_isr_handler ) )
return RTEMS_INVALID_ADDRESS;
if ( !_ISR_Is_valid_user_handler( (void *) old_isr_handler ) )
return RTEMS_INVALID_ADDRESS;
_ISR_Install_vector(
vector, (proc_ptr)new_isr_handler, (proc_ptr *)old_isr_handler );
return RTEMS_SUCCESSFUL;
}
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